# ---
# title: 1154. Day of the Year
# id: problem1154
# author: Tian Jun
# date: 2020-10-31
# difficulty: Easy
# categories: Math
# link: <https://leetcode.com/problems/day-of-the-year/description/>
# hidden: true
# ---
# 
# Given a string `date` representing a [Gregorian
# calendar](https://en.wikipedia.org/wiki/Gregorian_calendar) date formatted as
# `YYYY-MM-DD`, return the day number of the year.
# 
# 
# 
# **Example 1:**
# 
#     
#     
#     Input: date = "2019-01-09"
#     Output: 9
#     Explanation: Given date is the 9th day of the year in 2019.
#     
# 
# **Example 2:**
# 
#     
#     
#     Input: date = "2019-02-10"
#     Output: 41
#     
# 
# **Example 3:**
# 
#     
#     
#     Input: date = "2003-03-01"
#     Output: 60
#     
# 
# **Example 4:**
# 
#     
#     
#     Input: date = "2004-03-01"
#     Output: 61
#     
# 
# 
# 
# **Constraints:**
# 
#   * `date.length == 10`
#   * `date[4] == date[7] == '-'`, and all other `date[i]`'s are digits
#   * `date` represents a calendar date between Jan 1st, 1900 and Dec 31, 2019.
# 
# 
## @lc code=start
using LeetCode

## add your code here:
## @lc code=end
